The ceramic self-propagating composite pipe, also known as the corundum ceramic-lined wear-resistant composite pipe, is a type of ceramic composite steel pipe manufactured using a self-propagating high-temperature synthesis method.

The following is a detailed description:

Structural Composition: The ceramic self-propagating composite pipe consists of three layers from the inside out: corundum ceramic, a transition layer, and steel. The ceramic layer is formed at temperatures above 2200℃, creating a dense corundum ceramic (Al?O?), which is then firmly bonded to the steel pipe through the transition layer.

Features:

Excellent Wear Resistance: The inner lining is made of corundum ceramic, with a Mohs hardness of up to 9.0, equivalent to HRC90 or higher. Its wear life is ten to several tens of times longer than that of quenched steel.

Corrosion Resistance and Scale Prevention: Corundum ceramic is neutral in nature, possessing resistance to acid, alkali, and seawater corrosion, while also preventing scale formation.

Low Operating Resistance: The inner surface is smooth, never rusts, and has no convex spiral lines. The cleaning resistance coefficient is 0.0193, slightly lower than that of seamless pipes, reducing operating costs. Excellent temperature resistance and thermal shock resistance: It can operate normally for extended periods within a temperature range of -50℃ to 700℃. The material's coefficient of linear expansion is approximately half that of steel pipes, exhibiting excellent thermal stability.

Low project cost: Lightweight, 50% lighter than cast stone pipes of the same inner diameter and 20-30% lighter than wear-resistant alloy pipes. It also boasts good wear and corrosion resistance, a long service life, and reduces costs for supports, handling, installation, and operation. Compared to wear-resistant alloy pipes, project costs are reduced by approximately 20%.

Convenient installation and construction: Lightweight and with good weldability, it can be installed using welding, flanges, quick connections, etc., facilitating construction and reducing installation costs.

Application areas: Due to its wear-resistant, corrosion-resistant, and heat-resistant properties, it can be widely used in power, metallurgy, mining, coal, and chemical industries as pipelines for transporting abrasive particulate materials and corrosive media such as sand, stone, coal powder, ash, and molten aluminum. In addition, this pipe does not contaminate or adhere to molten aluminum, making it an ideal material for manufacturing aluminum melting equipment, aluminum liquid conveying pipes, and riser pipes. It is also suitable for conveying corrosive materials containing solid particles, as well as corrosive media such as high-temperature corrosive gases and sulfur-containing geothermal water.